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SI SEMENE
Water safety Water safety Parameter Unfiltered tap water Allowed range Filtered Free Chlorinemg CL2/l 0.37 0.2 – 1 0.007 ▲ Total Chlorinemg CL2/l 0.42 No limit 0.084
General General Parameter Unfiltered tap water Allowed range Filtered TemperatureC 22.6 No limit 22.6 Hardnessmg CaCO3/l 94.9 80 – 459 94.9 Hardness fF 9.49 No limit 9.49 pH 6.6 6.5 – 9.5 6.6 TurbidityNTU 0.1 ≤ 4 0.01 ColorColor Units 5 ≤ 15 5 ConductivityμS / cm 273 ≤ 2,500 273 TDSmg/l 174.7estimated 0 – 1,199 174.7 Alkalinitymg CaCO3/l 32.1 No limit 32.1
Pathogens Pathogens Parameter Unfiltered tap water Allowed range Filtered ClostridiumUFC/100ml 0 ≤ 0 0 eColiUFC/100ml 0 ≤ 0 0 BacteriasNMP/100ml 0 ≤ 0 0 EnterococcusUFC/100ml 0 ≤ 0 0
Chemical parameters Chemical parameters Parameter Unfiltered tap water Allowed range Filtered Mercuryμg Hg/l Not reported ≤ 1 — Nitritesmg NO2/l 0.01 ≤ 0.5 0.004 Nitratesmg NO3/l 2.8 ≤ 50 0.84
Minerals Minerals Parameter Unfiltered tap water Allowed range Filtered Magnesiummg/l 1.8 No limit 1.8 Calciummg/l 35 No limit 35 Chloridemg/l 59 ≤ 250 59
Metals Metals Parameter Unfiltered tap water Allowed range Filtered Aluminiumμg/l 10 ≤ 200 10 Antimonyμg/l 1Sampled Nov 2025 ≤ 5 1 Arsenicμg/l Not reported ≤ 10 — Cadmiumμg/l 1Sampled Nov 2025 ≤ 5 1 Chromiumμg/l 5Sampled Nov 2025 ≤ 50 5 Ironμg/l 10 ≤ 200 10 Leadμg/l Not reported ≤ 10 —
Chlorine by-products Chlorine by-products Parameter Unfiltered tap water Allowed range Filtered Total Trihalomethanesμg/l 12.1Sampled Nov 2025 ≤ 100 0.61
Perfluorinated chemicals Perfluorinated chemicals Parameter Unfiltered tap water Allowed range Filtered Total PFASug/L Not reported ≤ 0.1 — PFAS 4ng/l Not reported No limit — PFAS 21ng/l Not reported No limit —
Other Other Parameter Unfiltered tap water Allowed range Filtered Ammoniamg/l 0.01 No limit 0.003 Sulfatemg/l 4.9 No limit 4.9
Data from the French health inspection of drinking water (Ministry of Health, regional health agencies), per distribution unit. Quality ranges are based on WHO guidelines, EU Directive 2020/2184 and the French public health code.
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Data from the French health inspection of drinking water (Ministry of Health, regional health agencies), per distribution unit. Quality ranges are based on WHO guidelines, EU Directive 2020/2184 and the French public health code.
